Periodical sedimentation and cementation of minerals were occurred when the life activities of cyanophyte existed, thus forming laminated biogenic sediments in limestone.

• 由于蓝藻等低等微生物的生命活动所引起的周期性矿物沉淀、沉积物的捕获和胶结作用，从而形成了叠层状的生物沉积构造。叠层石赋存的岩性为石灰岩。